Landsat: An Earth-Observing Trailblazer

EarthzineArticles, Earth Observation, Original, Sections

Map showing the location of Peddavagu basin, a tributary of Krishna River basin

Picture of Bonneville Salt Flats, with salt being blue and bare earth being redLandsat missions have been funded for nearly 40 years. The images returned by the series of satellites have been useful in mapping urban growth, monitoring carbon in forests and deforestation, monitoring crop acreage, and surveying disaster aftermath. Landsat data has even found previously uncharted land and led to the discovery of new species.

Study Calls for Improved Spectrum Management to Protect Earth Observations

EarthzineArticles, Earth Observation, OpEd, Original, Politics, Sections, Technology

Map of portugal showing burned areas

Cropped RFI interference map for AMSR-E showing areas where obviously noticeable amounts of interference exists (image courtesy NASA).The proliferation of wireless communications and other active services such as radars and radio location devices blinds us from seeing the natural electromagnetic emissions necessary, for example, for monitoring the ocean temperature and studying the formation of stars. Scientific use through passive measurement of the radio spectrum is important ‰ÛÏto enhance public safety, environmental security, and extend human knowledge of the Earth and the larger universe.‰Û The authors, members of a U.S. National Research Council committee investigating this problem, recommend action.

The Mississippi Mesonet

EarthzineArticles, Climate, Education, Original, Sections, Weather

Mississippi MesonetOver the past five years, Jackson State University has taken a leading role in the development of a world-class mesoscale observing network in Mississippi for research, education, and operational use: The Mississippi Mesonet (White and Matlack 2005). Broadly speaking a mesonet can be considered to be a network of automated weather observing stations whose spatial distribution facilitates near-real time description in between the standard “synoptic” observing stations of the National Weather Service (NWS) and Federal Aviation Administration (FAA). In many cases, they are characterized by improved temporal resolution and supplemental sensors compared to the synoptic network.

Monitoring Superstorms Leading to Better Understanding of Effects

Kelley ChristensenOriginal

As the climate changes, superstorms are becoming more common. Earthzine staff explore how severe weather affects people and how remote sensing can change our understanding of storms. Earthzine’s latest monthly focus topic comes as spring begins to brighten the northern hemisphere. For the month of March, our focus topic articles center on superstorms – massive storms that effect millions of … Read More